casbin/util/is_instance_of.cpp

/*
 * Copyright 2020 The casbin Authors. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "casbin/pch.h"

#ifndef IS_INSTANCE_OF_CPP
#define IS_INSTANCE_OF_CPP

#include "casbin/persist/watcher_ex.h"
#include "casbin/persist/watcher_update.h"
#include "casbin/util/util.h"

namespace casbin {

template <typename Base, typename T>
bool IsInstanceOf(const T*) {
    return std::is_base_of<Base, T>::value;
}

template bool IsInstanceOf<class WatcherEx, class Watcher>(class Watcher const*);
template bool IsInstanceOf<class WatcherUpdatable, class Watcher>(class Watcher const*);

} // namespace casbin

#endif // IS_INSTANCE_OF_CPP